Fireproof casing.



J. J. PLUCKER.

FIRBPROOF GASING.

APPLICATION FILED FEB. 11. 1903.

No MODEL.

PATENTED JULY 28, 1903.

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UNITED STATES `PATENT Patented url y 28, 190.

OFFICE.

JACOB J. PLUCKER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO CATHERINE A. PLUCKER AND HOWARD W. PLUOKER.

FIREPROOF CASING.

SPECIFICATION forming part of Letters Patent No. 734,604, dated July 28, 1903.

Application led February 1l, 1903. Serial NO- 142,335- CNO 11105813 To all whom it may concern:

Be it known that I, JACOB J. PLUCKER, a citizen of the United States of America, and a resident of 6820 Paschall avenue, Philadelphia, Pennsylvania, have invented certain new and useful Improvements in Fireproof Oasings, of which the following is a specication. Y

This invention relates to certain new and useful improvements in ireproof casings for elevator and similarY shafts, and the partielllar form shown in this application is a modication of the structure shown in my application, Serial No. 142,884, filed of even date herewith.

Referring to the drawings, wherein like parts are designated by the same referencenumerals wherever they occur, Figure l is a vertical section showing the mechanism for operating the shutters. Fig. 2 is a plan view of the shutter-operating mechanism, which is mounted above the ceiling of the top floor of the building and to which the shutter-operating rods are connected."

1 designates the posts in which are pivotedV the shutters 2, the adjacent ends of the shutters being connected together by means of shafts, to the opposite ends of each of which two shutters are rigidly secured. Each of the shafts carries a gear 3, which is fast on the shaft and mounted between the pair of shutters secured to the ends of the shaft, as fully described in my pending application above referred to.

4 designates vertical shafts, which are provided with a series of worms 5, adapted to mesh with the gears 3. Each shaft 4 is provided on its upper end with a pinion 6, these pinions meshing with worms 7 on horizontal shafts 8, mounted in supporting-brackets 9 and located above the ceiling of the top door of the building. These shafts 8 are geared together by meansof the beveled gears l0, so that they rotate in unison. Mounted on one of the shafts 8 is a gear 11, and with this gear meshes a worm 12, carried by a shaft 13,which extends down the outside of the elevator-casing and on each floor is provided with a suitable hand-wheel 14 or other operating device. From this construction it will be seen that when the shaft 13 is turned by the handwheel 14 on any door it will,through the worm 12 and the gear 11', rotate the shafts 8, and these shafts in turn, through the worms 7, willfrotate the vertical shafts et, which will operate, through the worms and the gears 3, to open or close all the shutters of the casing simultaneously. Y. Y l

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is- Y l. In an elevator or similar shaft, the combination with a series of posts surrounding the shaft, sets of movable shutters interposed between the posts, vertical shafts parallel to the posts, worms on the shafts adapted to mesh with gears on the shutters,pand means for operating all the shafts in'unison, whereby all the sets of shutters may be opened and closed simultaneously.

2. In an elevator-shaft, the combination with a series of posts surrounding the shaft, sets of movable'shutters interposed between 'the posts, gears on the shutters, a vertical shaft parallel with the posts, a Worm on the vertical shaft meshing with the gears on .the shutters, a pinion on the end of the vertical shaft,a horizontal shaft provided with a worm, and means for operating the horizontal shaft, whereby all the sets of shutters may be opened and closed simultaneously.

3. In an elevator or similar shaft, the combination with a series of posts surrounding the shaft, sets of movable shutters, interposed between the posts, gears on the shutters, vertical shafts parallel With the posts, worms on the shafts meshing with the gears on the shutters, pinions on the upper ends of the shafts, a series of horizontal shafts at the top of the elevator-shaft, the horizontal shafts being provided with worms meshing with the pinions on the top of the vertical shafts, and means for operating the horizontal shafts,whereby all the sets of shutters may beopened and closed simultaneously.

Signed at Philadelphiathis'thlday of Febrnary, 1903.

JACOB J. PLCKEE.

Witnesses: v-

WAYNE P. RAMBO, EMoNs RAMBO. 

